Gomoto's Fuseki Studies

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Gomoto
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Re: Gomoto's Fuseki Studies

Post by Gomoto »

Dear Bill,

both boards are an even game in my opinion. (I understand that we do not share this opinion probably yet :))

We did explore some variations in this thread and did not encounter a forced position with a black lead yet.

I will revise my opinion if a forced line with an advantage for black is revealed.

And for now I stand by my argument, the move is not refuted yet.

I still have quite some fun exploring the world behind it. It is always nice to throw black out of its game plan early.

Regards
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Re: Gomoto's Fuseki Studies

Post by fycj »

I hate to be that guy but here is the alphago evaluation, just 5% of loss for white, it's totally playable for amateurs, i prefer black though
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Re: Gomoto's Fuseki Studies

Post by Gomoto »

Dear fycj,

no problem here mate :cool:,

Even alphago zero thinks it is an even game according to your picture. I am fine with 50,1 % win rate for black.

But thanks for showing the gap to proper openings. Now I can see why it is not played by pros.

Edit:
And after a second review, the gap is closing already :D:
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Re: Gomoto's Fuseki Studies

Post by Gomoto »

And watch this :twisted:

Now I am really proud of myself :bow:
(My old weakness, I am a little too self confident ;-) )

After more than 2000 years, a new playable second move for white. Increasing the size of the go universe by the factor 2. :lol: (Do not take me too serious here please)
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Re: Gomoto's Fuseki Studies

Post by fycj »

There is this one too, which i find quite difficult to manage as white

Alphago evaluations also are made with early 3-3 invasions in mind, if you approach the 4-4 the advantage winrate is evaluated completely different

Imho i think most games are decided in the middle game, most reversals occur there for amateurs, in the opening it's good to have something you are familiar with and then move on
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Re: Gomoto's Fuseki Studies

Post by Gomoto »

(But the picture in the previous post is not related to the move of this thread.)
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Re: Gomoto's Fuseki Studies

Post by Gomoto »

A friend asked me for my take on a tewari look at the move:
Click Here To Show Diagram Code
[go]$$B
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . O . . . . . |
$$ | . . . X . . . . . , . . . . . b a . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . , . . . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . X . . . . . , . . . . . O . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]
After the white 6-3 move black would like to play at a. The answer at b is not the optimal move for black. So in my opinion the tewari heuristic is a further argument in favor of the early inside approach move.
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Re: Gomoto's Fuseki Studies

Post by Bill Spight »

Gomoto wrote:A friend asked me for my take on a tewari look at the move:
Click Here To Show Diagram Code
[go]$$B
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . O . . . . . |
$$ | . . . X . . . . . , . . . . . b a . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . , . . . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . X . . . . . , . . . . . O . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]
After the white 6-3 move black would like to play at a. The answer at b is not the optimal move for black. So in my opinion the tewari heuristic is a further argument in favor of the early inside approach move.
You must also address this question.
Click Here To Show Diagram Code
[go]$$W
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . a . . . . . |
$$ | . . . X . . . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . , . . . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . X . . . . . , . . . . . O . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]
In this position would White prefer to play at "a", or at some other point in the top right corner?
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Re: Gomoto's Fuseki Studies

Post by Gomoto »

a is played in some pro games (seldom), even without the hoshi stone.

It is even better with the 4-4 exchange already in place.
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Re: Gomoto's Fuseki Studies

Post by Bill Spight »

Gomoto wrote:a is played in some pro games (seldom), even without the hoshi stone.

It is even better with the 4-4 exchange already in place.
(Emphasis mine.)

That last statement is what you are trying to prove. And it is you who has the burden of proof, since it is your proposition. The burden is not on other people to refute your play. Proof by assertion is no proof at all.
The Adkins Principle:
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— Winona Adkins

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Everything with love. Stay safe.
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Re: Gomoto's Fuseki Studies

Post by Gomoto »

It is not my burden, it is the burden of my opponent :lol:

forum/viewtopic.php?p=226061#p226061


(a little) more serious:
I am quite content if alphago zero and my pro database are asserting a move is fine. I am not trying to proof anything.

Kombilo (3-4 versus 4-4) 85 to 16 good enough for me
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Re: Gomoto's Fuseki Studies

Post by Bill Spight »

Gomoto wrote:It is not my burden, it is the burden of my opponent :lol:
OC, in a game, if your opponent does not refute your play, so far, so good. OTOH, if that play lowers your win rate, be it ever so slightly, it is your burden.
(a little) more serious:
I am quite content if alphago zero and my pro database are asserting a move is fine. I am not trying to proof anything.
But here you are studying fuseki in a go forum, where we are discussing plays, not making them. Not that anybody can prove much about not unreasonable opening plays, but your perception that no one has refuted your play is not an argument in its favor. It is up to you to make that argument.
Kombilo (3-4 versus 4-4) 85 to 16 good enough for me
I suppose you mean Black's response to White's 6-3 play. What does Kombilo, and more importantly, you, say about White's 6-3 play? You say that it is rare in pro play. Is it more frequent than 16/101? Or is it much less frequent? If 16/101 is good enough for you, then p < 16/101 should be even better.
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Everything with love. Stay safe.
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Re: Gomoto's Fuseki Studies

Post by Gomoto »

Bill, I will not enter a meta discussion any further.

On your other questions

There are two seperate points:

I. (comparing two positions, assigning a value to them)
the tewari analysis:
Is the 6-3 move better if the 4-4 answer is already in place and black can not choose to play on the 3-4 point anymore? (I think yes, and you doubted this. I quoted my Kombilo database proportion to support my point of view)

II. (is a move reasonable at all, no comparison, no value assigned)
Is a move reasonable choice at all? (talking about the 6-3 point in this case, here I do not look at a proportion at all, i just look if it ever appears in pro play)

I do not say the 6-3 inside approach is better than any other viable play, I just say it is a reasonable move. The shown variations in this thread, the tewari heuristics (including the alphago evaluation), the lack of refutations and the win rates of several strong go engines (never showing less than rounded 50% winrate in any forced variation) are the foundation for my assertion: The 6-3 inside approach is a reasonable move against the ninrensei fuseki.

In the further discussion I prefer adplay arguments over adhominem arguments :twisted:
If you think my move is bad, just show me and dont critisize my methods ;-)
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Re: Gomoto's Fuseki Studies

Post by Bill Spight »

Gomoto wrote:In the further discussion I prefer adplay arguments over adhominem arguments :twisted:
If you think my move is bad, just show me and dont critisize my methods ;-)
If I criticize your methods, it is because I would like for you to learn something. I am not putting you down. :)

If you propose what is obviously a not unreasonable play in the opening, and then say, "Aha! Nobody has refuted it," what have you learned in your fuseki studies, which is, after all, the title of this thread? If you try a flawed tewari method, and I point that out, you say I am making an ad hominem attack. All I see is that you have formed an opinion and stuck to it. What have you learned?
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Re: Gomoto's Fuseki Studies

Post by Bill Spight »

Gomoto wrote: There are two seperate points:

I. (comparing two positions, assigning a value to them)
the tewari analysis:
Is the 6-3 move better if the 4-4 answer is already in place and black can not choose to play on the 3-4 point anymore? (I think yes, and you doubted this. I quoted my Kombilo database proportion to support my point of view)
No, I did not question or dispute that. :)
II. (is a move reasonable at all, no comparison, no value assigned)
Is a move reasonable choice at all? (talking about the 6-3 point in this case, here I do not look at a proportion at all, i just look if it ever appears in pro play)
Not good enough. It matter to the tewari. In the tewari, if play B in response to play A is not so good, that is one thing. But if the original play A is even worse, then the position with B first and A second is not so good for the player who plays A.
I do not say the 6-3 inside approach is better than any other viable play, I just say it is a reasonable move.
You don't just say that it is a reasonable move, you say that it is as good as playing the 4-4 in the open corner.
The Adkins Principle:
At some point, doesn't thinking have to go on?
— Winona Adkins

Visualize whirled peas.

Everything with love. Stay safe.
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